./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 16:54:29,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:54:29,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:54:29,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:54:29,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:54:29,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:54:29,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:54:29,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:54:29,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:54:29,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:54:29,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:54:29,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:54:29,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:54:29,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:54:29,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:54:29,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:54:29,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:54:29,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:54:29,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:54:29,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:54:29,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:54:29,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:54:29,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:54:29,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:54:29,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:54:29,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:54:29,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:54:29,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:54:29,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:54:29,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:54:29,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:54:29,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:54:29,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:54:29,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:54:29,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:54:29,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:54:29,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:54:29,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:54:29,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:54:29,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:54:29,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:54:29,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:54:29,844 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:54:29,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:54:29,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:54:29,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:54:29,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:54:29,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:54:29,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:54:29,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:54:29,850 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:54:29,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:54:29,851 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:54:29,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:54:29,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:54:29,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:54:29,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:54:29,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:54:29,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:54:29,852 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:54:29,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:54:29,852 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:54:29,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:54:29,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:54:29,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:54:29,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:54:29,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:54:29,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:54:29,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:54:29,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:54:29,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:54:29,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:54:29,855 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:54:29,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:54:29,855 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:54:29,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:54:29,856 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-11-25 16:54:30,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:54:30,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:54:30,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:54:30,173 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:54:30,173 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:54:30,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-25 16:54:33,450 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:54:33,682 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:54:33,683 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-25 16:54:33,691 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/data/910eabd86/941b819763c6491b832c4f70f38a8fe4/FLAG7b88b76bb [2022-11-25 16:54:33,706 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/data/910eabd86/941b819763c6491b832c4f70f38a8fe4 [2022-11-25 16:54:33,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:54:33,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:54:33,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:54:33,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:54:33,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:54:33,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:54:33" (1/1) ... [2022-11-25 16:54:33,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8db578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:33, skipping insertion in model container [2022-11-25 16:54:33,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:54:33" (1/1) ... [2022-11-25 16:54:33,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:54:33,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:54:33,992 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-25 16:54:34,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:54:34,018 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:54:34,059 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-25 16:54:34,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:54:34,099 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:54:34,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:34 WrapperNode [2022-11-25 16:54:34,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:54:34,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:54:34,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:54:34,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:54:34,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:34" (1/1) ... [2022-11-25 16:54:34,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:34" (1/1) ... [2022-11-25 16:54:34,190 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 413 [2022-11-25 16:54:34,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:54:34,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:54:34,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:54:34,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:54:34,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:34" (1/1) ... [2022-11-25 16:54:34,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:34" (1/1) ... [2022-11-25 16:54:34,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:34" (1/1) ... [2022-11-25 16:54:34,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:34" (1/1) ... [2022-11-25 16:54:34,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:34" (1/1) ... [2022-11-25 16:54:34,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:34" (1/1) ... [2022-11-25 16:54:34,261 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:34" (1/1) ... [2022-11-25 16:54:34,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:34" (1/1) ... [2022-11-25 16:54:34,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:54:34,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:54:34,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:54:34,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:54:34,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:34" (1/1) ... [2022-11-25 16:54:34,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:54:34,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:54:34,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:54:34,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:54:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:54:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:54:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:54:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:54:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 16:54:34,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 16:54:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 16:54:34,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 16:54:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 16:54:34,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 16:54:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:54:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 16:54:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:54:34,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:54:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:54:34,367 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:54:34,525 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:54:34,527 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:54:35,368 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:54:35,392 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:54:35,399 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 16:54:35,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:54:35 BoogieIcfgContainer [2022-11-25 16:54:35,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:54:35,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:54:35,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:54:35,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:54:35,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:54:33" (1/3) ... [2022-11-25 16:54:35,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0cc6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:54:35, skipping insertion in model container [2022-11-25 16:54:35,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:54:34" (2/3) ... [2022-11-25 16:54:35,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0cc6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:54:35, skipping insertion in model container [2022-11-25 16:54:35,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:54:35" (3/3) ... [2022-11-25 16:54:35,417 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-11-25 16:54:35,427 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:54:35,439 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:54:35,440 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 16:54:35,440 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:54:35,629 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 16:54:35,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 513 places, 544 transitions, 1112 flow [2022-11-25 16:54:35,937 INFO L130 PetriNetUnfolder]: 41/541 cut-off events. [2022-11-25 16:54:35,938 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:54:35,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 541 events. 41/541 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 690 event pairs, 0 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 459. Up to 2 conditions per place. [2022-11-25 16:54:35,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 513 places, 544 transitions, 1112 flow [2022-11-25 16:54:35,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 499 places, 530 transitions, 1078 flow [2022-11-25 16:54:35,961 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:54:35,976 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 499 places, 530 transitions, 1078 flow [2022-11-25 16:54:35,979 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 499 places, 530 transitions, 1078 flow [2022-11-25 16:54:35,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 499 places, 530 transitions, 1078 flow [2022-11-25 16:54:36,100 INFO L130 PetriNetUnfolder]: 41/530 cut-off events. [2022-11-25 16:54:36,100 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:54:36,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 530 events. 41/530 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 691 event pairs, 0 based on Foata normal form. 0/489 useless extension candidates. Maximal degree in co-relation 459. Up to 2 conditions per place. [2022-11-25 16:54:36,115 INFO L119 LiptonReduction]: Number of co-enabled transitions 21384 [2022-11-25 16:55:01,474 INFO L134 LiptonReduction]: Checked pairs total: 22479 [2022-11-25 16:55:01,475 INFO L136 LiptonReduction]: Total number of compositions: 610 [2022-11-25 16:55:01,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:55:01,497 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66669660, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:55:01,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 16:55:01,507 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2022-11-25 16:55:01,507 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:55:01,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:01,508 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:01,509 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:01,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:01,514 INFO L85 PathProgramCache]: Analyzing trace with hash 485326457, now seen corresponding path program 1 times [2022-11-25 16:55:01,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:01,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306934248] [2022-11-25 16:55:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:01,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:55:01,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:01,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306934248] [2022-11-25 16:55:01,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306934248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:01,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:55:01,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:55:01,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3252651] [2022-11-25 16:55:01,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:01,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:55:01,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:55:01,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:55:02,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 1154 [2022-11-25 16:55:02,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 510.3333333333333) internal successors, (1531), 3 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:02,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:02,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 1154 [2022-11-25 16:55:02,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:02,424 INFO L130 PetriNetUnfolder]: 835/1228 cut-off events. [2022-11-25 16:55:02,425 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-11-25 16:55:02,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608 conditions, 1228 events. 835/1228 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4517 event pairs, 477 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 2392. Up to 913 conditions per place. [2022-11-25 16:55:02,436 INFO L137 encePairwiseOnDemand]: 1150/1154 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2022-11-25 16:55:02,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 252 flow [2022-11-25 16:55:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:55:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:55:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1561 transitions. [2022-11-25 16:55:02,465 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.450895436164067 [2022-11-25 16:55:02,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1561 transitions. [2022-11-25 16:55:02,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1561 transitions. [2022-11-25 16:55:02,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:02,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1561 transitions. [2022-11-25 16:55:02,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 520.3333333333334) internal successors, (1561), 3 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:02,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1154.0) internal successors, (4616), 4 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:02,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1154.0) internal successors, (4616), 4 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:02,498 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 3 states and 1561 transitions. [2022-11-25 16:55:02,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 252 flow [2022-11-25 16:55:02,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 16:55:02,505 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 108 flow [2022-11-25 16:55:02,507 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2022-11-25 16:55:02,511 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2022-11-25 16:55:02,511 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 108 flow [2022-11-25 16:55:02,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 510.3333333333333) internal successors, (1531), 3 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:02,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:02,513 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:02,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:55:02,513 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:02,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:02,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1600070657, now seen corresponding path program 1 times [2022-11-25 16:55:02,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:02,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3463501] [2022-11-25 16:55:02,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:02,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:55:02,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:02,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3463501] [2022-11-25 16:55:02,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3463501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:02,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:55:02,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:55:02,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454724373] [2022-11-25 16:55:02,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:02,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:55:02,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:55:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:55:02,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 1154 [2022-11-25 16:55:02,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 510.6666666666667) internal successors, (1532), 3 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:02,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:02,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 1154 [2022-11-25 16:55:02,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:03,076 INFO L130 PetriNetUnfolder]: 943/1388 cut-off events. [2022-11-25 16:55:03,076 INFO L131 PetriNetUnfolder]: For 520/520 co-relation queries the response was YES. [2022-11-25 16:55:03,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3253 conditions, 1388 events. 943/1388 cut-off events. For 520/520 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5061 event pairs, 541 based on Foata normal form. 0/1278 useless extension candidates. Maximal degree in co-relation 2065. Up to 1017 conditions per place. [2022-11-25 16:55:03,083 INFO L137 encePairwiseOnDemand]: 1150/1154 looper letters, 56 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2022-11-25 16:55:03,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 276 flow [2022-11-25 16:55:03,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:55:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:55:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1561 transitions. [2022-11-25 16:55:03,088 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.450895436164067 [2022-11-25 16:55:03,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1561 transitions. [2022-11-25 16:55:03,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1561 transitions. [2022-11-25 16:55:03,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:03,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1561 transitions. [2022-11-25 16:55:03,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 520.3333333333334) internal successors, (1561), 3 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:03,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1154.0) internal successors, (4616), 4 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:03,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1154.0) internal successors, (4616), 4 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:03,103 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 108 flow. Second operand 3 states and 1561 transitions. [2022-11-25 16:55:03,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 276 flow [2022-11-25 16:55:03,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 59 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:55:03,106 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 120 flow [2022-11-25 16:55:03,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2022-11-25 16:55:03,107 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2022-11-25 16:55:03,108 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 120 flow [2022-11-25 16:55:03,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 510.6666666666667) internal successors, (1532), 3 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:03,109 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:03,109 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:03,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:55:03,110 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:03,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:03,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1092880384, now seen corresponding path program 1 times [2022-11-25 16:55:03,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:03,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085117432] [2022-11-25 16:55:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:03,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:55:03,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:03,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085117432] [2022-11-25 16:55:03,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085117432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:03,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:55:03,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:55:03,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409285230] [2022-11-25 16:55:03,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:03,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:55:03,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:03,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:55:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:55:03,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1154 [2022-11-25 16:55:03,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 504.0) internal successors, (1512), 3 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:03,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:03,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1154 [2022-11-25 16:55:03,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:03,774 INFO L130 PetriNetUnfolder]: 943/1389 cut-off events. [2022-11-25 16:55:03,775 INFO L131 PetriNetUnfolder]: For 390/390 co-relation queries the response was YES. [2022-11-25 16:55:03,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3522 conditions, 1389 events. 943/1389 cut-off events. For 390/390 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5038 event pairs, 733 based on Foata normal form. 0/1333 useless extension candidates. Maximal degree in co-relation 2229. Up to 1389 conditions per place. [2022-11-25 16:55:03,782 INFO L137 encePairwiseOnDemand]: 1151/1154 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2022-11-25 16:55:03,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 212 flow [2022-11-25 16:55:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:55:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:55:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1526 transitions. [2022-11-25 16:55:03,787 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44078567302137495 [2022-11-25 16:55:03,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1526 transitions. [2022-11-25 16:55:03,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1526 transitions. [2022-11-25 16:55:03,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:03,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1526 transitions. [2022-11-25 16:55:03,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 508.6666666666667) internal successors, (1526), 3 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:03,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1154.0) internal successors, (4616), 4 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:03,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1154.0) internal successors, (4616), 4 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:03,801 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 120 flow. Second operand 3 states and 1526 transitions. [2022-11-25 16:55:03,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 212 flow [2022-11-25 16:55:03,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:55:03,808 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 126 flow [2022-11-25 16:55:03,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2022-11-25 16:55:03,809 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2022-11-25 16:55:03,810 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 126 flow [2022-11-25 16:55:03,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 504.0) internal successors, (1512), 3 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:03,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:03,811 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:03,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:55:03,812 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:03,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:03,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1569018855, now seen corresponding path program 1 times [2022-11-25 16:55:03,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:03,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193713584] [2022-11-25 16:55:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:03,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:55:03,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:03,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193713584] [2022-11-25 16:55:03,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193713584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:03,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:55:03,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:55:03,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499286338] [2022-11-25 16:55:03,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:03,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:55:03,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:03,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:55:03,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:55:04,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1154 [2022-11-25 16:55:04,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 501.75) internal successors, (2007), 4 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:04,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:04,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1154 [2022-11-25 16:55:04,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:04,417 INFO L130 PetriNetUnfolder]: 943/1390 cut-off events. [2022-11-25 16:55:04,417 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2022-11-25 16:55:04,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3374 conditions, 1390 events. 943/1390 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5038 event pairs, 733 based on Foata normal form. 0/1282 useless extension candidates. Maximal degree in co-relation 3361. Up to 1388 conditions per place. [2022-11-25 16:55:04,425 INFO L137 encePairwiseOnDemand]: 1149/1154 looper letters, 42 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2022-11-25 16:55:04,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 220 flow [2022-11-25 16:55:04,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:55:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:55:04,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2021 transitions. [2022-11-25 16:55:04,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4378249566724437 [2022-11-25 16:55:04,431 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2021 transitions. [2022-11-25 16:55:04,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2021 transitions. [2022-11-25 16:55:04,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:04,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2021 transitions. [2022-11-25 16:55:04,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.25) internal successors, (2021), 4 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:04,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:04,449 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:04,449 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 126 flow. Second operand 4 states and 2021 transitions. [2022-11-25 16:55:04,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 220 flow [2022-11-25 16:55:04,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 216 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 16:55:04,453 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 140 flow [2022-11-25 16:55:04,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2022-11-25 16:55:04,454 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2022-11-25 16:55:04,454 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 140 flow [2022-11-25 16:55:04,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 501.75) internal successors, (2007), 4 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:04,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:04,456 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:04,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:55:04,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:04,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:04,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1250567303, now seen corresponding path program 1 times [2022-11-25 16:55:04,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:04,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200801870] [2022-11-25 16:55:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:55:04,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:04,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200801870] [2022-11-25 16:55:04,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200801870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:04,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:55:04,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:55:04,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543190131] [2022-11-25 16:55:04,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:04,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:55:04,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:55:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:55:04,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1154 [2022-11-25 16:55:04,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:04,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:04,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1154 [2022-11-25 16:55:04,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:05,077 INFO L130 PetriNetUnfolder]: 943/1391 cut-off events. [2022-11-25 16:55:05,077 INFO L131 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2022-11-25 16:55:05,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3383 conditions, 1391 events. 943/1391 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5034 event pairs, 733 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 3361. Up to 1390 conditions per place. [2022-11-25 16:55:05,085 INFO L137 encePairwiseOnDemand]: 1150/1154 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2022-11-25 16:55:05,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 236 flow [2022-11-25 16:55:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:55:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:55:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-11-25 16:55:05,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4376083188908146 [2022-11-25 16:55:05,091 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-11-25 16:55:05,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-11-25 16:55:05,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:05,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-11-25 16:55:05,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:05,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:05,107 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:05,108 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 140 flow. Second operand 4 states and 2020 transitions. [2022-11-25 16:55:05,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 236 flow [2022-11-25 16:55:05,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:55:05,112 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 153 flow [2022-11-25 16:55:05,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2022-11-25 16:55:05,113 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2022-11-25 16:55:05,113 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 153 flow [2022-11-25 16:55:05,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:05,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:05,114 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:05,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:55:05,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:05,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:05,115 INFO L85 PathProgramCache]: Analyzing trace with hash 754751408, now seen corresponding path program 1 times [2022-11-25 16:55:05,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:05,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845054259] [2022-11-25 16:55:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:05,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 16:55:05,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:05,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845054259] [2022-11-25 16:55:05,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845054259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:05,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:55:05,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:55:05,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086238838] [2022-11-25 16:55:05,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:05,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:55:05,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:05,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:55:05,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:55:05,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1154 [2022-11-25 16:55:05,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 502.25) internal successors, (2009), 4 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:05,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:05,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1154 [2022-11-25 16:55:05,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:05,729 INFO L130 PetriNetUnfolder]: 943/1392 cut-off events. [2022-11-25 16:55:05,730 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-11-25 16:55:05,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3392 conditions, 1392 events. 943/1392 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5034 event pairs, 733 based on Foata normal form. 0/1286 useless extension candidates. Maximal degree in co-relation 3368. Up to 1391 conditions per place. [2022-11-25 16:55:05,737 INFO L137 encePairwiseOnDemand]: 1150/1154 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2022-11-25 16:55:05,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 251 flow [2022-11-25 16:55:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:55:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:55:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-11-25 16:55:05,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4376083188908146 [2022-11-25 16:55:05,743 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-11-25 16:55:05,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-11-25 16:55:05,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:05,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-11-25 16:55:05,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:05,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:05,759 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:05,759 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 153 flow. Second operand 4 states and 2020 transitions. [2022-11-25 16:55:05,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 251 flow [2022-11-25 16:55:05,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 245 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 16:55:05,763 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 161 flow [2022-11-25 16:55:05,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2022-11-25 16:55:05,764 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2022-11-25 16:55:05,764 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 161 flow [2022-11-25 16:55:05,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.25) internal successors, (2009), 4 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:05,766 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:05,766 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:05,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:55:05,766 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:05,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:05,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1547928116, now seen corresponding path program 1 times [2022-11-25 16:55:05,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:05,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494782649] [2022-11-25 16:55:05,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:05,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:06,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 16:55:06,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:06,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494782649] [2022-11-25 16:55:06,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494782649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:06,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:55:06,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:55:06,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196565009] [2022-11-25 16:55:06,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:06,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:55:06,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:06,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:55:06,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:55:06,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1154 [2022-11-25 16:55:06,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 502.5) internal successors, (2010), 4 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:06,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:06,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1154 [2022-11-25 16:55:06,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:06,460 INFO L130 PetriNetUnfolder]: 943/1393 cut-off events. [2022-11-25 16:55:06,461 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2022-11-25 16:55:06,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3398 conditions, 1393 events. 943/1393 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5034 event pairs, 733 based on Foata normal form. 0/1288 useless extension candidates. Maximal degree in co-relation 3373. Up to 1392 conditions per place. [2022-11-25 16:55:06,468 INFO L137 encePairwiseOnDemand]: 1150/1154 looper letters, 46 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2022-11-25 16:55:06,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 261 flow [2022-11-25 16:55:06,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:55:06,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:55:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-11-25 16:55:06,474 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4376083188908146 [2022-11-25 16:55:06,474 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-11-25 16:55:06,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-11-25 16:55:06,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:06,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-11-25 16:55:06,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:06,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:06,488 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:06,488 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 161 flow. Second operand 4 states and 2020 transitions. [2022-11-25 16:55:06,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 261 flow [2022-11-25 16:55:06,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 255 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 16:55:06,492 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 169 flow [2022-11-25 16:55:06,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2022-11-25 16:55:06,493 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2022-11-25 16:55:06,493 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 169 flow [2022-11-25 16:55:06,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.5) internal successors, (2010), 4 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:06,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:06,494 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:06,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:55:06,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:06,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:06,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1628191839, now seen corresponding path program 1 times [2022-11-25 16:55:06,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:06,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605515600] [2022-11-25 16:55:06,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:06,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 16:55:06,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:06,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605515600] [2022-11-25 16:55:06,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605515600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:55:06,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504998901] [2022-11-25 16:55:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:06,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:55:06,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:55:06,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:55:06,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:55:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:07,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 16:55:07,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:55:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 16:55:07,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:55:07,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504998901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:07,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:55:07,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-25 16:55:07,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491418339] [2022-11-25 16:55:07,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:07,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:55:07,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:07,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:55:07,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:55:07,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1154 [2022-11-25 16:55:07,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 502.75) internal successors, (2011), 4 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:07,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:07,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1154 [2022-11-25 16:55:07,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:07,576 INFO L130 PetriNetUnfolder]: 943/1394 cut-off events. [2022-11-25 16:55:07,576 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-11-25 16:55:07,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3404 conditions, 1394 events. 943/1394 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5034 event pairs, 733 based on Foata normal form. 0/1290 useless extension candidates. Maximal degree in co-relation 3378. Up to 1393 conditions per place. [2022-11-25 16:55:07,585 INFO L137 encePairwiseOnDemand]: 1150/1154 looper letters, 47 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2022-11-25 16:55:07,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 271 flow [2022-11-25 16:55:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:55:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:55:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-11-25 16:55:07,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4376083188908146 [2022-11-25 16:55:07,591 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-11-25 16:55:07,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-11-25 16:55:07,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:07,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-11-25 16:55:07,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:07,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:07,605 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:07,605 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 169 flow. Second operand 4 states and 2020 transitions. [2022-11-25 16:55:07,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 271 flow [2022-11-25 16:55:07,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 265 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 16:55:07,609 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 177 flow [2022-11-25 16:55:07,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2022-11-25 16:55:07,610 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2022-11-25 16:55:07,610 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 177 flow [2022-11-25 16:55:07,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.75) internal successors, (2011), 4 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:07,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:07,611 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:07,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:55:07,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_972e8324-8910-4815-a8d7-f41c82d5464c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:55:07,823 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:07,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:07,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1714052197, now seen corresponding path program 1 times [2022-11-25 16:55:07,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:07,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278107455] [2022-11-25 16:55:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:07,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:55:11,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:11,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278107455] [2022-11-25 16:55:11,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278107455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:11,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:55:11,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 16:55:11,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549240234] [2022-11-25 16:55:11,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:11,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 16:55:11,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:11,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 16:55:11,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:55:13,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 455 out of 1154 [2022-11-25 16:55:13,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 177 flow. Second operand has 13 states, 13 states have (on average 457.7692307692308) internal successors, (5951), 13 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:13,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:13,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 455 of 1154 [2022-11-25 16:55:13,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:15,659 INFO L130 PetriNetUnfolder]: 2861/4241 cut-off events. [2022-11-25 16:55:15,660 INFO L131 PetriNetUnfolder]: For 934/934 co-relation queries the response was YES. [2022-11-25 16:55:15,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10485 conditions, 4241 events. 2861/4241 cut-off events. For 934/934 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 21224 event pairs, 397 based on Foata normal form. 1/3890 useless extension candidates. Maximal degree in co-relation 10458. Up to 1213 conditions per place. [2022-11-25 16:55:15,687 INFO L137 encePairwiseOnDemand]: 1141/1154 looper letters, 160 selfloop transitions, 12 changer transitions 7/179 dead transitions. [2022-11-25 16:55:15,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 179 transitions, 908 flow [2022-11-25 16:55:15,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:55:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:55:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5623 transitions. [2022-11-25 16:55:15,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40605141536684 [2022-11-25 16:55:15,701 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5623 transitions. [2022-11-25 16:55:15,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5623 transitions. [2022-11-25 16:55:15,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:15,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5623 transitions. [2022-11-25 16:55:15,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 468.5833333333333) internal successors, (5623), 12 states have internal predecessors, (5623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:15,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1154.0) internal successors, (15002), 13 states have internal predecessors, (15002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:15,735 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1154.0) internal successors, (15002), 13 states have internal predecessors, (15002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:15,736 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 177 flow. Second operand 12 states and 5623 transitions. [2022-11-25 16:55:15,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 179 transitions, 908 flow [2022-11-25 16:55:15,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 179 transitions, 902 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 16:55:15,758 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 243 flow [2022-11-25 16:55:15,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=243, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2022-11-25 16:55:15,760 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2022-11-25 16:55:15,760 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 243 flow [2022-11-25 16:55:15,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 457.7692307692308) internal successors, (5951), 13 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:15,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:15,763 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:15,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 16:55:15,763 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:15,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:15,764 INFO L85 PathProgramCache]: Analyzing trace with hash -561641723, now seen corresponding path program 2 times [2022-11-25 16:55:15,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:15,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281954593] [2022-11-25 16:55:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:15,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:55:18,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:18,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281954593] [2022-11-25 16:55:18,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281954593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:18,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:55:18,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 16:55:18,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617594588] [2022-11-25 16:55:18,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:18,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 16:55:18,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:18,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 16:55:18,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:55:21,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1154 [2022-11-25 16:55:21,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 243 flow. Second operand has 11 states, 11 states have (on average 451.27272727272725) internal successors, (4964), 11 states have internal predecessors, (4964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:21,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:21,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1154 [2022-11-25 16:55:21,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:27,162 INFO L130 PetriNetUnfolder]: 6447/9903 cut-off events. [2022-11-25 16:55:27,162 INFO L131 PetriNetUnfolder]: For 6516/6516 co-relation queries the response was YES. [2022-11-25 16:55:27,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27677 conditions, 9903 events. 6447/9903 cut-off events. For 6516/6516 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 60891 event pairs, 1168 based on Foata normal form. 1/9903 useless extension candidates. Maximal degree in co-relation 27643. Up to 2981 conditions per place. [2022-11-25 16:55:27,246 INFO L137 encePairwiseOnDemand]: 1136/1154 looper letters, 193 selfloop transitions, 93 changer transitions 7/293 dead transitions. [2022-11-25 16:55:27,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 293 transitions, 1713 flow [2022-11-25 16:55:27,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 16:55:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-25 16:55:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 9659 transitions. [2022-11-25 16:55:27,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3985722538582157 [2022-11-25 16:55:27,269 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 9659 transitions. [2022-11-25 16:55:27,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 9659 transitions. [2022-11-25 16:55:27,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:27,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 9659 transitions. [2022-11-25 16:55:27,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 459.95238095238096) internal successors, (9659), 21 states have internal predecessors, (9659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:27,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1154.0) internal successors, (25388), 22 states have internal predecessors, (25388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:27,326 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1154.0) internal successors, (25388), 22 states have internal predecessors, (25388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:27,327 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 243 flow. Second operand 21 states and 9659 transitions. [2022-11-25 16:55:27,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 293 transitions, 1713 flow [2022-11-25 16:55:27,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 293 transitions, 1668 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-25 16:55:27,441 INFO L231 Difference]: Finished difference. Result has 99 places, 157 transitions, 1088 flow [2022-11-25 16:55:27,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1088, PETRI_PLACES=99, PETRI_TRANSITIONS=157} [2022-11-25 16:55:27,444 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2022-11-25 16:55:27,444 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 157 transitions, 1088 flow [2022-11-25 16:55:27,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 451.27272727272725) internal successors, (4964), 11 states have internal predecessors, (4964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:27,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:27,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:27,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 16:55:27,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:27,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:27,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1059657265, now seen corresponding path program 3 times [2022-11-25 16:55:27,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:27,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165664994] [2022-11-25 16:55:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:27,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:55:30,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:30,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165664994] [2022-11-25 16:55:30,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165664994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:30,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:55:30,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 16:55:30,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895802210] [2022-11-25 16:55:30,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:30,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 16:55:30,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:30,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 16:55:30,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:55:33,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 455 out of 1154 [2022-11-25 16:55:33,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 157 transitions, 1088 flow. Second operand has 13 states, 13 states have (on average 457.7692307692308) internal successors, (5951), 13 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:33,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:33,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 455 of 1154 [2022-11-25 16:55:33,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:36,827 INFO L130 PetriNetUnfolder]: 7183/11397 cut-off events. [2022-11-25 16:55:36,827 INFO L131 PetriNetUnfolder]: For 35796/35796 co-relation queries the response was YES. [2022-11-25 16:55:36,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47500 conditions, 11397 events. 7183/11397 cut-off events. For 35796/35796 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 75891 event pairs, 1794 based on Foata normal form. 1/11397 useless extension candidates. Maximal degree in co-relation 47454. Up to 5905 conditions per place. [2022-11-25 16:55:36,941 INFO L137 encePairwiseOnDemand]: 1142/1154 looper letters, 372 selfloop transitions, 22 changer transitions 7/401 dead transitions. [2022-11-25 16:55:36,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 401 transitions, 3530 flow [2022-11-25 16:55:36,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:55:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:55:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5601 transitions. [2022-11-25 16:55:36,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40446273830155977 [2022-11-25 16:55:36,954 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5601 transitions. [2022-11-25 16:55:36,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5601 transitions. [2022-11-25 16:55:36,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:36,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5601 transitions. [2022-11-25 16:55:36,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 466.75) internal successors, (5601), 12 states have internal predecessors, (5601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:36,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1154.0) internal successors, (15002), 13 states have internal predecessors, (15002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:36,990 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1154.0) internal successors, (15002), 13 states have internal predecessors, (15002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:36,990 INFO L175 Difference]: Start difference. First operand has 99 places, 157 transitions, 1088 flow. Second operand 12 states and 5601 transitions. [2022-11-25 16:55:36,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 401 transitions, 3530 flow [2022-11-25 16:55:37,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 401 transitions, 3424 flow, removed 53 selfloop flow, removed 1 redundant places. [2022-11-25 16:55:37,509 INFO L231 Difference]: Finished difference. Result has 114 places, 166 transitions, 1210 flow [2022-11-25 16:55:37,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1210, PETRI_PLACES=114, PETRI_TRANSITIONS=166} [2022-11-25 16:55:37,510 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2022-11-25 16:55:37,510 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 166 transitions, 1210 flow [2022-11-25 16:55:37,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 457.7692307692308) internal successors, (5951), 13 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:37,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:37,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:37,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 16:55:37,513 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1974182541, now seen corresponding path program 1 times [2022-11-25 16:55:37,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:37,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650228170] [2022-11-25 16:55:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:37,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:55:37,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:37,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650228170] [2022-11-25 16:55:37,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650228170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:37,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:55:37,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:55:37,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456912501] [2022-11-25 16:55:37,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:37,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:55:37,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:37,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:55:37,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:55:37,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 1154 [2022-11-25 16:55:37,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 166 transitions, 1210 flow. Second operand has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:37,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:37,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 1154 [2022-11-25 16:55:37,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:42,045 INFO L130 PetriNetUnfolder]: 10361/16980 cut-off events. [2022-11-25 16:55:42,045 INFO L131 PetriNetUnfolder]: For 57127/57127 co-relation queries the response was YES. [2022-11-25 16:55:42,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72049 conditions, 16980 events. 10361/16980 cut-off events. For 57127/57127 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 125156 event pairs, 3444 based on Foata normal form. 214/17193 useless extension candidates. Maximal degree in co-relation 71995. Up to 6795 conditions per place. [2022-11-25 16:55:42,190 INFO L137 encePairwiseOnDemand]: 1146/1154 looper letters, 270 selfloop transitions, 91 changer transitions 6/367 dead transitions. [2022-11-25 16:55:42,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 367 transitions, 3478 flow [2022-11-25 16:55:42,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:55:42,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:55:42,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2542 transitions. [2022-11-25 16:55:42,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44055459272097053 [2022-11-25 16:55:42,196 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2542 transitions. [2022-11-25 16:55:42,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2542 transitions. [2022-11-25 16:55:42,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:42,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2542 transitions. [2022-11-25 16:55:42,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 508.4) internal successors, (2542), 5 states have internal predecessors, (2542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:42,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1154.0) internal successors, (6924), 6 states have internal predecessors, (6924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:42,208 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1154.0) internal successors, (6924), 6 states have internal predecessors, (6924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:42,208 INFO L175 Difference]: Start difference. First operand has 114 places, 166 transitions, 1210 flow. Second operand 5 states and 2542 transitions. [2022-11-25 16:55:42,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 367 transitions, 3478 flow [2022-11-25 16:55:43,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 367 transitions, 3450 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-25 16:55:43,160 INFO L231 Difference]: Finished difference. Result has 115 places, 222 transitions, 2041 flow [2022-11-25 16:55:43,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2041, PETRI_PLACES=115, PETRI_TRANSITIONS=222} [2022-11-25 16:55:43,161 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2022-11-25 16:55:43,161 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 222 transitions, 2041 flow [2022-11-25 16:55:43,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:43,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:43,162 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:43,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 16:55:43,163 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:43,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:43,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1201835751, now seen corresponding path program 2 times [2022-11-25 16:55:43,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:43,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714448428] [2022-11-25 16:55:43,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:43,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:55:43,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:43,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714448428] [2022-11-25 16:55:43,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714448428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:43,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:55:43,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:55:43,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123343579] [2022-11-25 16:55:43,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:43,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:55:43,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:43,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:55:43,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:55:43,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 1154 [2022-11-25 16:55:43,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 222 transitions, 2041 flow. Second operand has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:43,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:43,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 1154 [2022-11-25 16:55:43,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:49,199 INFO L130 PetriNetUnfolder]: 15237/25364 cut-off events. [2022-11-25 16:55:49,200 INFO L131 PetriNetUnfolder]: For 107321/107321 co-relation queries the response was YES. [2022-11-25 16:55:49,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116488 conditions, 25364 events. 15237/25364 cut-off events. For 107321/107321 co-relation queries the response was YES. Maximal size of possible extension queue 1553. Compared 204634 event pairs, 3885 based on Foata normal form. 300/25663 useless extension candidates. Maximal degree in co-relation 116434. Up to 11626 conditions per place. [2022-11-25 16:55:49,596 INFO L137 encePairwiseOnDemand]: 1146/1154 looper letters, 336 selfloop transitions, 126 changer transitions 0/462 dead transitions. [2022-11-25 16:55:49,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 462 transitions, 5201 flow [2022-11-25 16:55:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:55:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:55:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2034 transitions. [2022-11-25 16:55:49,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4406412478336222 [2022-11-25 16:55:49,610 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2034 transitions. [2022-11-25 16:55:49,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2034 transitions. [2022-11-25 16:55:49,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:49,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2034 transitions. [2022-11-25 16:55:49,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 508.5) internal successors, (2034), 4 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:49,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:49,625 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:49,625 INFO L175 Difference]: Start difference. First operand has 115 places, 222 transitions, 2041 flow. Second operand 4 states and 2034 transitions. [2022-11-25 16:55:49,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 462 transitions, 5201 flow [2022-11-25 16:55:51,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 462 transitions, 5197 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-25 16:55:51,017 INFO L231 Difference]: Finished difference. Result has 121 places, 312 transitions, 3700 flow [2022-11-25 16:55:51,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3700, PETRI_PLACES=121, PETRI_TRANSITIONS=312} [2022-11-25 16:55:51,018 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2022-11-25 16:55:51,019 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 312 transitions, 3700 flow [2022-11-25 16:55:51,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:51,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:51,019 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:51,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 16:55:51,020 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:51,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:51,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1376762769, now seen corresponding path program 1 times [2022-11-25 16:55:51,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:51,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572798940] [2022-11-25 16:55:51,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:51,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:55:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:55:51,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:55:51,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572798940] [2022-11-25 16:55:51,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572798940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:55:51,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:55:51,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:55:51,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722553312] [2022-11-25 16:55:51,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:55:51,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:55:51,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:55:51,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:55:51,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:55:51,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 1154 [2022-11-25 16:55:51,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 312 transitions, 3700 flow. Second operand has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:51,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:55:51,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 1154 [2022-11-25 16:55:51,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:55:57,572 INFO L130 PetriNetUnfolder]: 15344/25749 cut-off events. [2022-11-25 16:55:57,572 INFO L131 PetriNetUnfolder]: For 144031/144031 co-relation queries the response was YES. [2022-11-25 16:55:57,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127337 conditions, 25749 events. 15344/25749 cut-off events. For 144031/144031 co-relation queries the response was YES. Maximal size of possible extension queue 1612. Compared 210111 event pairs, 5228 based on Foata normal form. 314/26062 useless extension candidates. Maximal degree in co-relation 127280. Up to 11434 conditions per place. [2022-11-25 16:55:57,873 INFO L137 encePairwiseOnDemand]: 1146/1154 looper letters, 364 selfloop transitions, 88 changer transitions 15/467 dead transitions. [2022-11-25 16:55:57,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 467 transitions, 6141 flow [2022-11-25 16:55:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:55:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:55:57,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2540 transitions. [2022-11-25 16:55:57,880 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44020797227036396 [2022-11-25 16:55:57,880 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2540 transitions. [2022-11-25 16:55:57,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2540 transitions. [2022-11-25 16:55:57,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:55:57,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2540 transitions. [2022-11-25 16:55:57,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:57,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1154.0) internal successors, (6924), 6 states have internal predecessors, (6924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:57,892 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1154.0) internal successors, (6924), 6 states have internal predecessors, (6924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:57,892 INFO L175 Difference]: Start difference. First operand has 121 places, 312 transitions, 3700 flow. Second operand 5 states and 2540 transitions. [2022-11-25 16:55:57,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 467 transitions, 6141 flow [2022-11-25 16:55:59,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 467 transitions, 6141 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:55:59,576 INFO L231 Difference]: Finished difference. Result has 128 places, 328 transitions, 4147 flow [2022-11-25 16:55:59,577 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=3700, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4147, PETRI_PLACES=128, PETRI_TRANSITIONS=328} [2022-11-25 16:55:59,577 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 86 predicate places. [2022-11-25 16:55:59,578 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 328 transitions, 4147 flow [2022-11-25 16:55:59,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:55:59,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:55:59,579 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:55:59,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 16:55:59,579 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:55:59,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:55:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash 787696865, now seen corresponding path program 4 times [2022-11-25 16:55:59,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:55:59,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576263679] [2022-11-25 16:55:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:55:59,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:55:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:56:02,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:02,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576263679] [2022-11-25 16:56:02,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576263679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:02,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:02,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 16:56:02,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804988767] [2022-11-25 16:56:02,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:02,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 16:56:02,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:02,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 16:56:02,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 16:56:03,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 455 out of 1154 [2022-11-25 16:56:04,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 328 transitions, 4147 flow. Second operand has 12 states, 12 states have (on average 458.0) internal successors, (5496), 12 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:04,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:04,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 455 of 1154 [2022-11-25 16:56:04,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:12,392 INFO L130 PetriNetUnfolder]: 17683/30237 cut-off events. [2022-11-25 16:56:12,392 INFO L131 PetriNetUnfolder]: For 203358/203358 co-relation queries the response was YES. [2022-11-25 16:56:12,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160457 conditions, 30237 events. 17683/30237 cut-off events. For 203358/203358 co-relation queries the response was YES. Maximal size of possible extension queue 1908. Compared 259697 event pairs, 3184 based on Foata normal form. 1/30237 useless extension candidates. Maximal degree in co-relation 160396. Up to 14466 conditions per place. [2022-11-25 16:56:12,652 INFO L137 encePairwiseOnDemand]: 1144/1154 looper letters, 690 selfloop transitions, 32 changer transitions 7/729 dead transitions. [2022-11-25 16:56:12,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 729 transitions, 10108 flow [2022-11-25 16:56:12,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 16:56:12,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 16:56:12,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5162 transitions. [2022-11-25 16:56:12,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4066488104616354 [2022-11-25 16:56:12,664 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5162 transitions. [2022-11-25 16:56:12,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5162 transitions. [2022-11-25 16:56:12,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:12,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5162 transitions. [2022-11-25 16:56:12,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 469.27272727272725) internal successors, (5162), 11 states have internal predecessors, (5162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:12,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1154.0) internal successors, (13848), 12 states have internal predecessors, (13848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:12,688 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1154.0) internal successors, (13848), 12 states have internal predecessors, (13848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:12,688 INFO L175 Difference]: Start difference. First operand has 128 places, 328 transitions, 4147 flow. Second operand 11 states and 5162 transitions. [2022-11-25 16:56:12,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 729 transitions, 10108 flow [2022-11-25 16:56:17,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 729 transitions, 9705 flow, removed 46 selfloop flow, removed 2 redundant places. [2022-11-25 16:56:17,265 INFO L231 Difference]: Finished difference. Result has 143 places, 341 transitions, 4236 flow [2022-11-25 16:56:17,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4236, PETRI_PLACES=143, PETRI_TRANSITIONS=341} [2022-11-25 16:56:17,267 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2022-11-25 16:56:17,267 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 341 transitions, 4236 flow [2022-11-25 16:56:17,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 458.0) internal successors, (5496), 12 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:17,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:17,269 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:17,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 16:56:17,269 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:56:17,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:17,270 INFO L85 PathProgramCache]: Analyzing trace with hash -105539365, now seen corresponding path program 2 times [2022-11-25 16:56:17,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:17,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007525449] [2022-11-25 16:56:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:17,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:56:17,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:17,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007525449] [2022-11-25 16:56:17,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007525449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:17,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:17,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:56:17,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971590794] [2022-11-25 16:56:17,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:17,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:56:17,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:17,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:56:17,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:56:17,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 1154 [2022-11-25 16:56:17,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 341 transitions, 4236 flow. Second operand has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:17,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:17,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 1154 [2022-11-25 16:56:17,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand